/*
 * Day1.cpp
 *
 *  Created on: 2013-2-1
 *      Author: Administrator
 */
#include <iostream>

int main()
{
  using namespace std;
  cout << "hello world!" << endl;

  int i = 110;
  int &ref = i ;

  int *p1 = NULL;
  const int *p2 = NULL;
  int * const p3 = NULL;

  const int * const p4 = NULL;

  cout << "ref: " << ref << endl;
  return 0;
}
